Badgley Mischka   New York Magazine Pick   The Collection: Sexy shapes with a nod to vintage style. Body-skimming dresses flaunt delicate accents like ribbons, crystals, and latticework.   The Gown: Ivory backless charmeuse gown.   The Price: $3,900.   Where to Buy: Gowns range from $2,500 to $15,000 and can be purchased at Bergdorf Goodman, Kleinfeld, and Wedding Salon of Manhasset.